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Difference between map and collect in Ruby?
...lace under ruby-doc.org:
http://www.ruby-doc.org/core/classes/Array.html#M000249
ary.collect {|item| block } → new_ary
ary.map {|item| block } → new_ary
ary.collect → an_enumerator
ary.map → an_enumerator
Invokes block once for each element of self.
Creates a new arr...
When is CRC more appropriate to use than MD5/SHA1?
...
I ran every line of this PHP code in 1.000.000 loop. Results are in comments (#).
hash('crc32', 'The quick brown fox jumped over the lazy dog.');# 750ms 8 chars
hash('crc32b','The quick brown fox jumped over the lazy dog.');# 700ms 8 chars
hash('md5', 'Th...
How to convert int to NSString?
...rs, and will honor the localization settings for the user:
NSInteger n = 10000;
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
formatter.numberStyle = NSNumberFormatterDecimalStyle;
NSString *string = [formatter stringFromNumber:@(n)];
In the US, for example, that would create a...
Is it better to use std::memcpy() or std::copy() in terms to performance?
...s. There is only one version of MD5, and it's faster than SHA-2, so I did 3000 loops on a similar set of 5 test strings.
These are my final 10 results:
Time (in seconds) to complete run of MD5 tests
std::copy memcpy % difference
5.52 5.56 +0.72%
5.56 5.55 -0.18%...
Converting an integer to a hexadecimal string in Ruby
...he other ruby newbies out there: "#%02x%02x%02x" % [255, 0, 10] #=> "#ff000a" - took me a bit to figure out how to send several args.
– ANeves thinks SE is evil
Mar 22 '11 at 19:08
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How do you count the lines of code in a Visual Studio solution?
...y, and quantity does not imply quality. However, a huge team putting a 545,000 lb (545,000 lb!!) Dreamliner in the air is an entirely different accomplishment than launching the ultralite I built single handedly in my garage. And if you think about the number of lines of code in Windows, maybe Mr. B...
Reading a file line by line in Go
... ReadString/ReadBytes/... in bufio.Reader
In my testcase, ~250MB, ~2,500,000 lines, bufio.Scanner(time used: 0.395491384s) is faster than bufio.Reader.ReadString(time_used: 0.446867622s).
Source code: https://github.com/xpzouying/go-practice/tree/master/read_file_line_by_line
Read file use bufio...
Comparing two byte arrays in .NET
...e longer to process than an unsafe comparison? Especially when your doing 1000's of comparisons?
– tcables
Jan 20 '11 at 18:18
93
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Read/Write 'Extended' file properties (C#)
...course, since there aren't millions of them, you could limit the loop to 1,000.)
– skst
Nov 17 '18 at 18:03
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How do you Encrypt and Decrypt a PHP String?
...e password-hashing algorithms:
Argon2
scrypt
bcrypt
PBKDF2-SHA256 with 86,000 iterations
Never use a general-purpose hash function (MD5, SHA256) for password storage.
Don't encrypt URL Parameters. It's the wrong tool for the job.
PHP String Encryption Example with Libsodium
If you are on PHP < ...